Please read these papers and draw conclusions from them.
1. Schaffer, A. E. et al. Biallelic loss of human CTNNA2, encoding αN-catenin, leads to ARP2/3 complex overactivity and disordered cortical neuronal migration. Nat Genet. doi: 10.1038/s41588-018-0166-0 (2018).
2. Romero, D. M., Bahi-Buisson, N. & Francis, F. Genetics and mechanisms leading to human cortical malformations. Semin Cell Dev Biol. 76, 33-75 (2018).
3. Budnar, S., Yap, A.S. Versatile Scaffold: Extrajunctional Roles for α-Catenin. Dev Cell. 43, 4381-382 (2017).

Describe and discuss the main findings of the set paper (links to the paper itself and the reviews are provided below).
1. What are the novel findings of the research?
2. What are the most significant findings?
3. What are the advantages/disadvantages of the experimental approaches used (be concise)?
4. Are the conclusions valid? What are the strengths and weaknesses?
5. To conclude, you should state whether, in your opinion, this paper has made an important contribution to the broader field and justify this statement.
6. You should also identify one or more unanswered questions that will be important for researchers in the field to address in future.